贵州电线教你如何挑选矿用电缆

如果矿用电力电缆每一次的击穿电压都在同一个数值上，应考虑是否电缆的端头发生了击穿，此时，可以将局部放电屏蔽室大门的门连锁开关，人为合上，将屏蔽室大门打开，进行升压，观察击穿现象，很快就能确定端头击穿位置。如果经过排查，电缆端头未出现击穿，更换多根绝缘线芯和电缆，甚至将曾今已做合格的电缆复试或空载复试。选择电缆时候应该选比实际使用需要的额定电压更大一些的，允许电流应等于或大于最大继续供电负载电流，导体线芯的横截面积需要满足供电系统短路时的稳定性的需求，贵州电线电缆依据电缆长度验算电压降是不是符合需求。

If you breakdown voltage of mining power cable each in the same value, should consider whether the end of cable breakdown, this can be the door interlock switch partial discharge shielding room door, artificially closed, the shielding room door open, boost, observe the breakdown phenomenon, soon to determine the end position of the breakdown. If it is checked, the end of the cable does not break through, replace a number of insulated wire core and cable, and even have now made qualified cable retest or empty retest. When the cable selection should be selected for practical use than the rated voltage need larger, should be equal to or greater than the maximum power load current to allow, the cross-sectional area of the conductor core to meet the needs of the stability of power system short circuit when the demand, according to the length of the cable voltage drop is not in line with the needs of checking.

根据零线标识，相序识别清晰，防止错接相序。平行集束导线的线路，减少杆塔，横担和瓷件，节省大量金属。矿用电力电缆由于绝缘化可降低杆塔高度，不受树木，建筑群等复杂环境的影响，可沿墙敷设彻底省去电杆，工程造价低。钢芯应能无困难地重新组合，并易于用单手握住将接续管自导线切割端套入钢芯。同样，铝线的成型也应做到铝线能容易地重新组合，并便于用单手握住将接续管自导线的切割端套入铝线。由于导线成集束状组合，抗拉断力较单线成倍增加，降低单相断线事故。在受风压，霜冻等张力作用时平行间的绝缘不受压，运行安全系数提高。对防雷击、防窃电、防漏电效果改善明显。由于其组合可分裂性使分支跨接容易，变容组合方便。

According to the zero line identification, the phase sequence recognition is clear and the error sequence is prevented. The lines of parallel cluster conductors reduce rods and towers, transverse loads and porcelain pieces, and save a lot of metal. The insulation of mine power cable can reduce the height of the tower, and it is not affected by the complex environment such as trees, buildings and so on. It can lay the wall along the wall and save the poles completely, so the cost of the project is low. The steel core should be reassembled without difficulty, and it is easy to use one hand to hold the cutting end of the continuous tube self guide line into the steel core. Similarly, the molding of the aluminum wire should also be made easy to recombine the aluminum wire and make it easy to use one hand to hold the cutting end of the connecting pipe from the wire to the aluminum wire. Due to the combination of wire bundle, the tensile fracture force increases twice as much as the single line, reducing the single phase broken line accident. In the action of tension, frost and other tension, the parallel insulation is not pressed, and the safety factor of the operation is increased. The effect of lightning protection, electricity theft prevention and leakage prevention is improved obviously. Because the combination of its separability makes the branch easy to cross, the variable volume combination is convenient.